diff --git "a/leetcode3/\354\265\234\353\257\274\354\247\200/3701.py" "b/leetcode3/\354\265\234\353\257\274\354\247\200/3701.py"
new file mode 100644
index 00000000..2fa04184
--- /dev/null
+++ "b/leetcode3/\354\265\234\353\257\274\354\247\200/3701.py"
@@ -0,0 +1,10 @@
+class Solution:
+    def alternatingSum(self, nums: List[int]) -> int:
+        result = nums[0]
+        for i in range(1, len(nums)):
+            if i % 2 == 0:
+                result += nums[i]
+            else:
+                result -= nums[i]
+        return result
+        
\ No newline at end of file